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JPL Small-Body Database Browser
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71997 (2000 WD178)
Classification: Mars-crossing Asteroid          SPK-ID: 2071997
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .299702086447265 5.6634e-08  
a 2.292179391266735 9.0594e-09 au
q 1.605208445192673 1.2781e-07 au
i 7.233817291172843 4.1724e-06 deg
node 82.57119742542059 4.2443e-05 deg
peri 264.0457359583684 4.2752e-05 deg
M 174.9065771645802 6.9136e-06 deg
tp 2457984.649962339045
(2017-Aug-19.14996234)
2.3026e-05 TDB
period 1267.568190699468
3.47
7.5147e-06
2.057e-08
d
yr
n .2840083891670911 1.6837e-09 deg/d
Q 2.979150337340798 1.1774e-08 au
  Orbit Determination Parameters
   # obs. used (total)      727  
   data-arc span      8283 days (22.68 yr)  
   first obs. used      1996-07-29  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48219  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:47:06  

Additional Information
 Earth MOID = .61808 au 
 Jupiter MOID = 2.4774 au 
 T_jup = 3.526 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO436286  

71997 (2000 WD178)          Discovered 2000-Nov-28 by Spacewatch at Kitt Peak
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 WD178 = 1996 OY2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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